Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$179M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$90.1M |
| 3 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$56M |
| 4 |
iShares Silver Trust
SLV
|
+$41.7M |
| 5 |
Advanced Micro Devices
AMD
|
+$39.8M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$42.8M |
| 2 |
Verizon
VZ
|
+$42.5M |
| 3 |
Occidental Petroleum
OXY
|
+$34.7M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Direxion Daily S&P 500 Bull 3x ETF
SPXL
|
+$32.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 97.72% |
| 2 | Technology | 0.67% |
| 3 | Consumer Discretionary | 0.38% |
| 4 | Industrials | 0.24% |
| 5 | Healthcare | 0.22% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
176
PUT
UnitedHealth
UNH
$356B
| $86.5M | 0.08% |
169,600
-136,100
| -45% | -$65.6M |
|
|
177
iShares 20+ Year Treasury Bond ETF
TLT
$47.1B
| $86.2M | 0.08% |
+652,921
| New | +$90.1M |
|
|
TWTR
178
CALL
DELISTED
Twitter, Inc.
TWTR
| $85.4M | 0.08% |
2,206,500
+419,000
| +23% | +$15.3M |
|
179
CALL
IBM
IBM
$221B
| $85.1M | 0.08% |
1,365,200
+161,700
| +13% | +$21.1M |
|
180
CALL
JD.com
JD
$38.2B
| $84.2M | 0.08% |
1,454,900
+393,400
| +37% | +$26.7M |
|
181
PUT
United Airlines
UAL
$36.2B
| $84.1M | 0.08% |
1,815,100
+223,900
| +14% | +$9.71M |
|
|
KFYP
182
PUT
DELISTED
KraneShares CICC China Leaders 100 Index ETF
KFYP
| $84.1M | 0.08% |
2,934,500
+1,437,300
| +96% | +$41.8M |
|
183
PUT
Target
TGT
$74.7B
| $83.7M | 0.08% |
394,200
-309,200
| -44% | -$66.9M |
|
184
PUT
Deere & Co
DE
$187B
| $83.1M | 0.08% |
200,000
+60,500
| +43% | +$23.2M |
|
|
185
PUT
IBM
IBM
$221B
| $83.1M | 0.08% |
786,100
-336,500
| -30% | -$43.9M |
|
186
PUT
Booking.com
BKNG
$145B
| $82.9M | 0.08% |
882,500
+65,000
| +8% | +$6.07M |
|
187
CALL
Roku
ROKU
$23.1B
| $82.7M | 0.08% |
659,900
+144,700
| +28% | +$21.2M |
|
188
CALL
Texas Instruments
TXN
$236B
| $82.7M | 0.08% |
450,500
+264,500
| +142% | +$46.6M |
|
|
X
189
PUT
DELISTED
US Steel
X
| $82.5M | 0.08% |
2,185,900
-163,600
| -7% | -$4.43M |
|
190
PUT
United Parcel Service
UPS
$87B
| $82.3M | 0.08% |
383,900
+4,300
| +1% | +$914K |
|
191
CALL
Mercado Libre
MELI
$100B
| $81.1M | 0.07% |
68,200
-45,800
| -40% | -$49.8M |
|
|
192
CALL
Deere & Co
DE
$187B
| $80.3M | 0.07% |
193,400
+135,900
| +236% | +$52.1M |
|
193
PUT
VanEck Durable High Dividend ETF
DURA
$38.6M
| $80M | 0.07% |
292,800
-7,200
| -2% | -$229K |
|
194
PUT
CrowdStrike
CRWD
$218B
| $79.7M | 0.07% |
1,403,200
+261,600
| +23% | +$12.2M |
|
195
CALL
Direxion Daily Technology Bull 3x ETF
TECL
$5.92B
| $79.6M | 0.07% |
2,125,100
-5,500
| -0.3% | -$340K |
|
|
SPLK
196
CALL
DELISTED
Splunk Inc
SPLK
| $79M | 0.07% |
531,600
-151,500
| -22% | -$18.6M |
|
|
TWTR
197
PUT
DELISTED
Twitter, Inc.
TWTR
| $78.7M | 0.07% |
2,033,800
+500,100
| +33% | +$18.3M |
|
198
PUT
Applied Materials
AMAT
$361B
| $78.4M | 0.07% |
595,100
-397,900
| -40% | -$54.8M |
|
199
PUT
PepsiCo
PEP
$188B
| $78.4M | 0.07% |
468,300
-276,800
| -37% | -$46.5M |
|
|
200
PUT
Texas Instruments
TXN
$236B
| $77.2M | 0.07% |
420,700
+144,300
| +52% | +$25.4M |
|
Similar funds
Simplex Trading's Q1 2022 Portfolio in Review
As of Q1 2022, Simplex Trading held 12,038 positions worth $109B, up 10% from $99B the previous quarter. Its ten largest holdings account for 37% of the portfolio.
Simplex Trading's Q1 2022 filing shows 1,600 new, 4,440 increased, 4,085 reduced and 1,638 closed positions. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M. The largest sale was State Street Financial Select Sector SPDR ETF, an estimated $42.8M.
By sector, the portfolio is most concentrated in Miscellaneous at 98% of assets, up from 97% a quarter earlier, followed by Technology and Consumer Discretionary.
- Simplex Trading's largest Q1 2022 buy was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
- Simplex Trading added most to Apple in Q1 2022, an estimated $179M increase.
- Simplex Trading's biggest Q1 2022 reduction was Verizon, cutting an estimated $42.5M.
- Simplex Trading fully exited State Street Financial Select Sector SPDR ETF in Q1 2022, selling an estimated $42.8M.
- Simplex Trading's ten largest holdings make up 37% of its $109B portfolio in Q1 2022.
- Simplex Trading opened 1,600 new positions and closed 1,638 in Q1 2022.
- Simplex Trading's portfolio value rose 10% quarter-over-quarter to $109B.
Based on Simplex Trading's 13F filing for Q1 2022, filed 2 May 2022.